Heater unit

ABSTRACT

We have invented a new, original, and ornamental design for a heater unit. The following is a specification of the heater unit, reference being had to the accompanying drawings, which form a part hereof.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top, front, and left side perspective view of a heater unit of our design;

FIG. 2 is a bottom, front, and right side perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a rear view thereof; and

FIG. 8 is a front view thereof.

The dashed broken lines illustrate portions of the heater unit that form no part of the claimed design. 

What is claimed is:
 1. The ornamental design for a heater unit, as shown and described. 